Gold nanoparticles encapsulated by negatively charged molecules have been stably anchored at a Au substratethrough layer-by-layer deposition technique, employing a redox polyviologen derivative as the cationiccounterpart. UV-vis spectroscopy, quartz crystal microbalance, transmission electron microscopy, scanningelectron microscopy, atomic force microscopy, and voltammetric measurements have been performed in orderto characterize the systems and to give a rationale to the effect of the deposition conditions on the propertiesof the resulting multilayers. The behavior of two benchmark electroactive species ([Fe(CN)6]4- and[Ru(NH3)6]3+) has been studied on nanoparticle-terminated multilayers. The nanoparticles provide chargepercolation through the multilayer and charge transfer with redox species in solution. The results imply thatthe electrochemical behavior of nanoparticle-containing films is partly dependent on the charge compensationmode within polyelectrolyte multilayers.

Preparation and Characterization of a RedoxMultilayer Film Containing Au Nanoparticles / Terzi, Fabio; Zanardi, Chiara; Zanfrognini, Barbara; Pigani, Laura; Seeber, Renato; J., Lukkari; T., Aaritalo; J., Kankare. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - STAMPA. - 113:12(2009), pp. 4868-4874. [10.1021/jp809402j]

Preparation and Characterization of a RedoxMultilayer Film Containing Au Nanoparticles

TERZI, Fabio;ZANARDI, Chiara;ZANFROGNINI, Barbara;PIGANI, Laura;SEEBER, Renato;
2009

Abstract

Gold nanoparticles encapsulated by negatively charged molecules have been stably anchored at a Au substratethrough layer-by-layer deposition technique, employing a redox polyviologen derivative as the cationiccounterpart. UV-vis spectroscopy, quartz crystal microbalance, transmission electron microscopy, scanningelectron microscopy, atomic force microscopy, and voltammetric measurements have been performed in orderto characterize the systems and to give a rationale to the effect of the deposition conditions on the propertiesof the resulting multilayers. The behavior of two benchmark electroactive species ([Fe(CN)6]4- and[Ru(NH3)6]3+) has been studied on nanoparticle-terminated multilayers. The nanoparticles provide chargepercolation through the multilayer and charge transfer with redox species in solution. The results imply thatthe electrochemical behavior of nanoparticle-containing films is partly dependent on the charge compensationmode within polyelectrolyte multilayers.
2009
113
12
4868
4874
Preparation and Characterization of a RedoxMultilayer Film Containing Au Nanoparticles / Terzi, Fabio; Zanardi, Chiara; Zanfrognini, Barbara; Pigani, Laura; Seeber, Renato; J., Lukkari; T., Aaritalo; J., Kankare. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - STAMPA. - 113:12(2009), pp. 4868-4874. [10.1021/jp809402j]
Terzi, Fabio; Zanardi, Chiara; Zanfrognini, Barbara; Pigani, Laura; Seeber, Renato; J., Lukkari; T., Aaritalo; J., Kankare
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/617283
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